2563394 has 4 divisors (see below), whose sum is σ = 3845094. Its totient is φ = 1281696.

The previous prime is 2563387. The next prime is 2563409. The reversal of 2563394 is 4933652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1471369 + 1092025 = 1213^2 + 1045^2 .

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁹ + 6 + 3³ + 3⁹ + 9³ + 4⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 2563394.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640847 + ... + 640850.

2^2563394 is an apocalyptic number.

2563394 is a deficient number, since it is larger than the sum of its proper divisors (1281700).

2563394 is a wasteful number, since it uses less digits than its factorization.

2563394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281699.

The product of its digits is 19440, while the sum is 32.

The square root of 2563394 is about 1601.0602736937. The cubic root of 2563394 is about 136.8585038118.

The spelling of 2563394 in words is "two million, five hundred sixty-three thousand, three hundred ninety-four".